From c206d2bc191712e4e5f89ecd87df7ef014bbb484 Mon Sep 17 00:00:00 2001
From: Kim De Mey <kim.demey@gmail.com>
Date: Thu, 25 Mar 2021 14:20:26 +0100
Subject: [PATCH] Add raises annotation to withTimeout callbacks (#168)

---
 chronos/asyncloop.nim | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/chronos/asyncloop.nim b/chronos/asyncloop.nim
index 4e5a483..3ae42d4 100644
--- a/chronos/asyncloop.nim
+++ b/chronos/asyncloop.nim
@@ -951,7 +951,9 @@ proc withTimeout*[T](fut: Future[T], timeout: Duration): Future[bool] =
   var timer: TimerCallback
   var cancelling = false
 
-  proc continuation(udata: pointer) {.gcsafe.} =
+  # TODO: raises annotation shouldn't be needed, but likely similar issue as
+  # https://github.com/nim-lang/Nim/issues/17369
+  proc continuation(udata: pointer) {.gcsafe, raises: [Defect].} =
     if not(retFuture.finished()):
       if not(cancelling):
         if not(fut.finished()):
@@ -967,7 +969,9 @@ proc withTimeout*[T](fut: Future[T], timeout: Duration): Future[bool] =
       else:
         retFuture.complete(false)
 
-  proc cancellation(udata: pointer) {.gcsafe.} =
+  # TODO: raises annotation shouldn't be needed, but likely similar issue as
+  # https://github.com/nim-lang/Nim/issues/17369
+  proc cancellation(udata: pointer) {.gcsafe, raises: [Defect].} =
     if not isNil(timer):
       clearTimer(timer)
     if not(fut.finished()):